Checking for cross over conditions and generating an alert

[NinjaTrader_RyanM1]

Hi Crosscreek,

Unfortunately we can't assist with just an error code #. Let us know the offending line of code and the descriptive text found under the Error column. You can also attach the indicator file and I'll take a look.

[crosscreek]

Line 20, column 18
public class CrossAlert : Indicator

// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
/// <summary>
///
/// </summary>
[Description("")]
[Gui.Design.DisplayName("")]
public class CrossAlert : Indicator
{
#region Variables
// Wizard generated variables
private int fast = 5; // Default setting for Fast
private int slow = 15; // Default setting for Slow
// User defined variables (add any user defined variables below)
#endregion

/// <summary>
/// This method is used to configure the indicator and is called once before any bar data is loaded.
/// </summary>
protected override void Initialize()
{
Fast = 5;
Slow = 15;
CalculateOnBarClose = true;
Overlay = true;
PriceTypeSupported = false;
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if (CrossAbove(EMA(Fast), EMA(Slow), 1))
{
// Mark the cross above bar with a green dot
DrawDot("Dot1 " + CurrentBar, true, 0, High[0] + TickSize, Color.Green);

// Only generate an alert on real-time data
if (!Historical)
Alert(Time[0].ToString(), NinjaTrader.Cbi.Priority.Medium, "Cross Above", Cbi.Core.InstallDir + @"\sounds\Alert1.wav", 0, Color.Black, Color.Yellow);
}
else if (CrossBelow(EMA(Fast), EMA(Slow), 1))
{
// Mark the cross below bar with a red dot
DrawDot("Dot2 " + CurrentBar, true, 0, Low[0] - TickSize, Color.Red);

// Only generate an alert on real-time data
if (!Historical)
Alert(Time[0].ToString(), NinjaTrader.Cbi.Priority.Medium, "Cross Below", Cbi.Core.InstallDir + @"\sounds\Alert2.wav", 0, Color.Yellow, Color.Black);
}
}

#region Properties

[Description("Fast period")]
[Category("Parameters")]
public int Fast
{
get { return fast; }
set { fast = Math.Max(1, value); }
}

[Description("Slow period")]
[Category("Parameters")]
public int Slow
{
get { return slow; }
set { slow = Math.Max(1, value); }
}
#endregion
}
}

#region NinjaScript generated code. Neither change nor remove.
// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
public partial class Indicator : IndicatorBase
{
private CrossAlert[] cacheCrossAlert = null;

private static CrossAlert checkCrossAlert = new CrossAlert();

/// <summary>
///
/// </summary>
/// <returns></returns>
public CrossAlert CrossAlert(int fast, int slow)
{
return CrossAlert(Input, fast, slow);
}

/// <summary>
///
/// </summary>
/// <returns></returns>
public CrossAlert CrossAlert(Data.IDataSeries input, int fast, int slow)
{
if (cacheCrossAlert != null)
for (int idx = 0; idx < cacheCrossAlert.Length; idx++)
if (cacheCrossAlert[idx].Fast == fast && cacheCrossAlert[idx].Slow == slow && cacheCrossAlert[idx].EqualsInput(input))
return cacheCrossAlert[idx];

lock (checkCrossAlert)
{
checkCrossAlert.Fast = fast;
fast = checkCrossAlert.Fast;
checkCrossAlert.Slow = slow;
slow = checkCrossAlert.Slow;

if (cacheCrossAlert != null)
for (int idx = 0; idx < cacheCrossAlert.Length; idx++)
if (cacheCrossAlert[idx].Fast == fast && cacheCrossAlert[idx].Slow == slow && cacheCrossAlert[idx].EqualsInput(input))
return cacheCrossAlert[idx];

CrossAlert indicator = new CrossAlert();
indicator.BarsRequired = BarsRequired;
indicator.CalculateOnBarClose = CalculateOnBarClose;
#if NT7
indicator.ForceMaximumBarsLookBack256 = ForceMaximumBarsLookBack256;
indicator.MaximumBarsLookBack = MaximumBarsLookBack;
#endif
indicator.Input = input;
indicator.Fast = fast;
indicator.Slow = slow;
Indicators.Add(indicator);
indicator.SetUp();

CrossAlert[] tmp = new CrossAlert[cacheCrossAlert == null ? 1 : cacheCrossAlert.Length + 1];
if (cacheCrossAlert != null)
cacheCrossAlert.CopyTo(tmp, 0);
tmp[tmp.Length - 1] = indicator;
cacheCrossAlert = tmp;
return indicator;
}
}
}
}

// This namespace holds all market analyzer column definitions and is required. Do not change it.
namespace NinjaTrader.MarketAnalyzer
{
public partial class Column : ColumnBase
{
/// <summary>
///
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.CrossAlert CrossAlert(int fast, int slow)
{
return _indicator.CrossAlert(Input, fast, slow);
}

/// <summary>
///
/// </summary>
/// <returns></returns>
public Indicator.CrossAlert CrossAlert(Data.IDataSeries input, int fast, int slow)
{
return _indicator.CrossAlert(input, fast, slow);
}
}
}

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
public partial class Strategy : StrategyBase
{
/// <summary>
///
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition("Indicator")]
public Indicator.CrossAlert CrossAlert(int fast, int slow)
{
return _indicator.CrossAlert(Input, fast, slow);
}

/// <summary>
///
/// </summary>
/// <returns></returns>
public Indicator.CrossAlert CrossAlert(Data.IDataSeries input, int fast, int slow)
{
if (InInitialize && input == null)
throw new ArgumentException("You only can access an indicator with the default input/bar series from within the 'Initialize()' method");

return _indicator.CrossAlert(input, fast, slow);
}
}
}
#endregion

[NinjaTrader_RyanM1]

What is the error message and what line is causing it?

[crosscreek]

Getting

Line 20, column 18
line 20 is "public class CrossAlert : Indicator"

error code CS0101, clicked for info then get:

"Unfortunately we do not have NinjaScript context based Help information on this specific error code. You can check the Microsoft MSDN site section on error codes for futher information."

[NinjaTrader_RyanM1]

Hi Crosscreek,

Below are not valid statement in the Initialize() method:
Fast = 5;
Slow = 15;


Generally NinjaTrader does not provide debugging or custom coding service. We are glad to guide in the right direction or assist if there is any particular issue, but cannot resolve all types of coding errors.

If you have further issues with this indicator, please see the link below for a NinjaScript consultant who can be hired to debug for you.

http://www.ninjatrader.com/webnew/partners_onlinetrading_NinjaScript.htm

[crosscreek]

Ok, thanks. It's a little confusing because that is exactly the line of code that is in the original, which works fine. I don't get why changing sma to ema does not work, but I guess there is nothing I can do about this.

[crosscreek]

I figured out what was wrong, I did not change the title in the line of code to a new name.

[julian nisbett]

crossareat.zip didn't work on my ninja 7 error

when i try to complie it i get error .can u help get it work i use ninja 7


// Mark the cross below bar with a red dot
DrawDot(Time[0].ToString(), 0, Low[0] - TickSize, Color.Red);

[NinjaTrader_Austin]

Julian, there is an extra parameter with all the drawing objects for NinjaTrader 7: the autoscale parameter.

Please try this line instead:

DrawDot(Time[0].ToString(), true, 0, Low[0] - TickSize, Color.Red)

The "true" is the additional parameter needed.